1813242216 has 16 divisors (see below), whose sum is σ = 4533105600. Its totient is φ = 604414064.

The previous prime is 1813242161. The next prime is 1813242217. The reversal of 1813242216 is 6122423181.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1813242217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37775856 + ... + 37775903.

It is an arithmetic number, because the mean of its divisors is an integer number (283319100).

Almost surely, 2^1813242216 is an apocalyptic number.

It is an amenable number.

1813242216 is an abundant number, since it is smaller than the sum of its proper divisors (2719863384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1813242216 is a wasteful number, since it uses less digits than its factorization.

1813242216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75551768 (or 75551764 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1813242216 is about 42582.1819074598. The cubic root of 1813242216 is about 1219.4161445292.

Adding to 1813242216 its reverse (6122423181), we get a palindrome (7935665397).

The spelling of 1813242216 in words is "one billion, eight hundred thirteen million, two hundred forty-two thousand, two hundred sixteen".